Hi, my 5 yr old girl does this. It drives me crazy. She says it just feels good and it "stretches" her eyes. When she was even younger, she would squeeze her eyes tight and blink excessively. We have just determined that it is dehydration (she doesn't drink a whole lot....that drives me crazy too!) and staring too long at her game system or my iphone. Kids (and adults) don't blink enough when playing games or staring at their phones. That plus being tired and a little lacking in liquid cause her to blink more and "stretch" her eyes. We took her to both doctors and she was fine. They dialated her eyes and everything. So, it is just a phase hopefully she'll grow out of and in the meantime I give her eyedrops. She can not stand the them though and they are a struggle. It gets so much better after I get them in her though. Blessings.